Predicted to enable DNA-binding transcription factor activity; actin binding activity; and transcription coactivator activity. Predicted to be involved in positive regulation of pri-miRNA transcription by RNA polymerase II and positive regulation of striated muscle tissue development. Predicted to act upstream of or within several processes, including animal organ development; generation of neurons; and smooth muscle cell differentiation. Predicted to be located in cytoplasm. Orthologous to human MRTFB (myocardin related transcription factor B). [provided by Alliance of Genome Resources, Apr 2022]